wip: dir organisation, script cleanup

scripts/install/31-gcloud.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+if not_installed "gcloud"; then
+    echo "Installing gcloud..."
+    # Add the Cloud SDK distribution URI as a package source
+    echo "deb [signed-by=/usr/share/keyrings/cloud.google.gpg] http://packages.cloud.google.com/apt cloud-sdk main" \
+        | sudo tee -a /etc/apt/sources.list.d/google-cloud-sdk.list
+    # Import the Google Cloud Platform public key
+    curl https://packages.cloud.google.com/apt/doc/apt-key.gpg \
+        | sudo apt-key --keyring /usr/share/keyrings/cloud.google.gpg add -
+    update
+    install google-cloud-sdk
+    refresh
+fi
+
+gcloud --version